vulnwire
5.0med

CVE-2002-0518

The SYN cache (syncache) and SYN cookie (syncookie) mechanism in FreeBSD 4.5 and earlier allows remote attackers to cause a denial of servi…

Published 24 y ago · modified 4 mo ago · JSON

CVSS
5.0
v2.0 · NVD
CISA KEV
No
not known exploited
EPSS
2.5%
percentile 85%
Public exploits
0
none known

The SYN cache (syncache) and SYN cookie (syncookie) mechanism in FreeBSD 4.5 and earlier allows remote attackers to cause a denial of service (crash) (1) via a SYN packet that is accepted using syncookies that causes a null pointer to be referenced for the socket's TCP options, or (2) by killing and restarting a process that listens on the same socket, which does not properly clear the old inpcb pointer on restart.

Exploit prediction (EPSS)

2.47% probability of exploitation in the next 30 days, higher than 85% of all scored CVEs.

CVSS scores

Assigned byVersionScoreVector
NVD2.05.0AV:N/AC:L/Au:N/C:N/I:N/A:P

References

  • osvdb.org /6046 · vdb-entry, x_refsource_OSVDB, x_transferred
  • iss.net /security_center/static/8873.php · vdb-entry, x_refsource_XF, x_transferred
  • iss.net /security_center/static/8875.php · vdb-entry, x_refsource_XF, x_transferred
  • securityfocus.com /bid/4524 · vdb-entry, x_refsource_BID, x_transferred

Sources

vulnwire keeps one entry per vulnerability: the CVE id wins, then GHSA; records that alias each other are merged. Machine-readable: JSON.